Environment: understanding atmospheric and ocean flows: Figure 24 (a) The atmospheric concentration of methane, and changes in solar radiation reaching the Earth’s surface due to the Milankovitch cycles; (b) observed and expected atmospheric methane levels over the last 11 000 years up to 1937

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Environment: understanding atmospheric and ocean flows

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Figure 24 (a) The atmospheric concentration of methane, and changes in solar radiation reaching the Earth’s surface due to the Milankovitch cycles; (b) observed and expected atmospheric methane levels over the last 11 000 years up to 1937

4.3 Carbon dioxide (CO₂), methane (CH₄) and human activity

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